Gas and oil burning heater



J. WEIGEL Jan. 15, 1924.

GAS AND OIL BURNING HEATER Filed June 22. 1921 2 Sheets-Sheet I M X E WK 4 .m 7 W% my w WIT. L 2 H 2 v 2 o o w m J Jan. 15, 1924- J. WEIGEL GAS AND OIL BURNING HEATER Filed June 22. 1921 2 Sheets-Sheet mini- Patented Jan. 15, 1924.

JOHN WEIGEL, OF CINCINNATI, OHIO.

GAS AND OIL BURNING HEATER.

' Application filed June 22, 1921. Serial No. 479,646.

To all whom it may concern:

Be it known that I, JOHN WEIGEL, a citizen of the United States of America, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful Improvement in Gas and Oil Burning Heaters, of which the following is a specification.

This invention relates to heating-apparatus and, more especially, to hot-air furnaces adapted to the use of bothgas and oil simultaneously, or either of them, as oocasion may suggest or require in their operation, and thereby dispensing with the use of coal, wood and similar lump and bulk fuels.

The prime object of the structure herein is to provide a multiple-burner device that is arranged in two sets, one at either sideof the axial-line of the furnace or heater, and

intermediate two sets or series of upright air-receiving jacketed pipes in which the cool inlet-air is heated by the direct radiation of said several sets of multiple-burners that are both adapted to use either gas or oil, or one to use gas and the other oil, and then said heated inlet-air thence conveyed by means of transverse passages or branchpipes and longitudinal hot-air duets within, in the upper part of the main or body portion of the furnace-casing, into the hotair conducting and distributing pipes that extend beyond, from the dome or crown of.

said casing into the rooms or apartments above that are intended to be heated thereby.

The details of structure will be fully described in'connection with the accompanying two sheets of drawings, in which 4 Figure 1 is a perspective view-of the device embodying my invention, but omitting the usual outside jacket or casing, and otherwise showing both the gas and oil burners as they appear in combined use; I

Figure 2, a transverse rearwardly-extending sectional-perspective, taken on a line a little to the rear of the valved inlet or controlling feed ends of the burners, at the fore end of the furnace, and including the lower part of the main portion of the outercasing, with the dome or crown of said outer-casing omitted;

Figure 3, a plan view of Figure 1, but including the upright walls or main'bodyportion of theouter-casing and omitting the dome; and v Figure 4, a perspective view of the furnace withthe entire outer casing and dome intact and showing the'complete device as it appears in use, with both sets of gas an oil burners installed therein. 7

The furnace shown in the drawings is one having a s uare or rectangular casing, with uprightsi e-walls 5, 5, rear-wall 6, forewall 7 and a pyramidal or sloping dome or crown 8. Square openings or orifices 9 and 10 are provided side-by-sidein the lower part of the frontawall 7 and fitted with vertically-slidable doors or closurep-lates 11 the apartments above for heating the same.-

14, 14 indicate each one of a pair of horizontally-alined longitudinal boxes vor drums, shown square in cross-section, duly spaced apart, and arranged along the bottom of the furnace, and 15, 15 indicate each one of a" similar pair of spaced and alined boxes or drums arranged along the top of the furnace. The two sets or pairs of drums 14 and 15, at the opposite sides of the furnace, are vertically alined and duly connected by means of upright pipes or tubes 16 that-terminate top and bottom with the bottoms of the upperdrums 15, 15 and the tops of the lower drums 114,14, respectively, as best shown in Figure 2. Upright concentric pipes or tubes 17, 17, of lesser diameter than that .of the'pipes 16, are fitted within the latter and terminate top and bottom in the tops of the upper drums 15 and the bottoms of the lower drums 14,- respectively, as also shown in said Figure 2, whereby the tubes .form annular heating-jackets around the said internal tubes 17 as well as passageways for the ready circulation of air from the lower set of drums 14, 14 tothe upper set of drums 15, 15. Short horizontal branch-pipes 18 connect the lower drums 14, 14 with a lower longitudinal draft-pipe 19 at its fore. end, such draft-pipe extending centrally between the said pair of lower drums 14, 14 and on a level with them, and a heat-collecting chamber or drum 20 is provided in the top of the furnace, with a series of side-branches 21 leading to the pair ofupper drumsl5, 15, buthaving invertod-funnel shape or sloping side-walls 22 that form an expansion fire boX or chamber for t .e heat units arising by radiation from the top-plates 23 of the two burner-boxes 24 and that extend rearwardly from the front openings or orifices li and 10, respectively.

26 indicates a pair of suitably jetted or perforated gas-using twin-burners in the 'open-tunneled box or chamber 24, the full length of same ordinarily, and 27 indicates a pair of oil-using twin-burners in the adjoining open-tun'neled parallel box or chamber 25, an additional oil-burner 28 being provided in said last-named box or chamber 25 for the largersized furnaces or those of greater capacity, as best shown in Fig. 1. A longitudinal trough or. pan 29 is ordinarily provided in the said open-tunneled oil-chamber 25 for supporting'the oil-burners and catching any drip therefrom use, as well as permittingitsignition andvconsumption simultaneous with than of the burner-jets themselves, duringsuch use, so as to avoid accumulations therein. 7

Both ends of the furnace-casing are provided with the openings 9 and 10, especially in the event the device is intended for. more than the ordinary heating capacity, and then gas and oil' burners. of greater or lesser length can be inserted from both ends of the open-tunneled burner-boxes 24: and 25 to supply the desired initial heat.

Side-orifices BO are provided in the fore end of the lower draft-pipe 19for the exit of'any fumes a'ndnoxious vapors from the lower branches 1 8, in passing onward and outward through 'th e exit-orifice 31 at the rear or far end of the draft-pipe 19, for

discharge thence into the chimney or flue.

The bottomv of a narrow longitudinal throat or chamber 32 is open and provides for the rapid ascent of the air between the two burner-boxes 24 and 25, and thence through the orifices 33 at the top of said internal throat or chamber 32 into and through a longitudinal series of vertical pipes .or passages 34: that extend into the top of the upper central drum or chamber .20, whence such air passes .onwardly in a ieated condition into. the. dome 8 for distribution into the several conductor-pipes (not shown) for theapartmen ts above. The air rising in chamber 32 also branches off through openings 32 made in the side walls thereof and passes outwardly through the expansion-chamber 32? at both sides of the verticalpipes 34 and said chamber 32, and thence through the exits 38' above.

Short vertical internal tubes, or pipes35 eatend nottbqae i to top of. the'upper d 5 15, 15, for passage and "circulation "of thel ieateiclairfroin-belpw said and" thenoepas'sing onward into "the apart-- ers 26, 26, for gas, and an oil feed-tube leads to the suitably valved oil-burners 27, 2? and 28, as best shown in Figure 1, convenient to the operator ofthe furnace.

It will be seen, at 38, in Figures 1 and 2,

110W the Mb-tubes are split and fianged'and then coupled together by bolts for the purpose of readily assembling and dismantling the furnace parts when put up for use, or taken down for repairs, cleaning,

or packing, and for shipping, as'occasidn" may require. These branch-tubes are prefer erably made up of split or two-part semicircular telescoping sleeves and short thimbles or flanges 38, 38, the latter extending laterally from the upper air-drums 15, 15

and the middle drum 20, and, also, from the lower drums 14 and the draft-tubel9.

It will readily be seen how the furnace,

constructed as herein shown and described,

can be used very economically and conven-" iently, with either'gas or oil, as fuel, or both at the same time if found expedient and advantageous, and to accord with the supply and cost of each, and, practically, a"two-inone fuel service of gas and oil, instead of coal or like bulky, loose and dirty fuel, in-

convenient to handle, is the material and appreciable result. 7

Any shortage of gas may be readily remedied by using all oil in the furnace, or vice 7' versa, and there would be no worry on the part of the user on account of the shortage of either of said fuels, nor any smoke, dirt, ashes, poking, shoveling or the like occurring to inconvenience said user.

I claim V 1. In a hot-air gas-and-oil-usingfurnace, the combination of a pair of spaced lower longitudinal air drums or chambers, a'similar pair of spaced upper longitudinal air drums or chambers in vertical alinement with said lower drums, an interinediate'central lower draft-tube or exit-duct liorizon'tale ly-alined with said lower air drums, horizontal branch-pipes connectingsaid lower air-drums with said central draft-tube or exit-duct, upright inner air ducts'or pipes l'ading from the bottoms of the'said lower 'air drums to theceps of the, said upper airdrums, jackets or spaced tubes or' pipessue rounding the 's aid last nairned' inner air ducts or pipes between the upper and lower airdrums, a centrally-disposed longitudinal upper air-chamber between the pair of upper air-drums and in horizontal-alinement therewith, horizontal branch-pipes connecting said central upper air-chamber with the said pair of upper air-drums, an inverted hopper or a central funnel-shape upper air-chamber, a twin pair of open-ended burner boxes arranged beneath the said central funnel-shape upper air-chamber and adapted to contain fuel burners, means for controlling said gas and oil burners, and heat-radiating platesor partitions forming the tops of and leading 7 from the twin burner-boxes tothe said centrally-disposed longitudinal upper air-chamber, substantially as herein shown and described.

2. In a hot-air gas-and-oil-using furnace, the combination of a pair of spaced lower longitudinal air drums or chambers, a similar pair of spaced upper longitudinal air drums or chambers in vertical alinement with said lower drums, an intermediate lower l draft-tube or exit-duct horizontally-alined with the said lower air-drums horizontal branch-pipes connecting said lower air-drums with said central draft-tube or exit-duct, upright inner air-ducts leading from the bottoms of the said lower air-drums to the tops of the said upper air-drums, concentric spaced tubes or pipes surrounding the said last-named inner air-ducts between the upper and lower air-drums, a centrallydisposed longitudinal upper air-chamber between thevpair of upper air-drums and in horizontal-alinement therewith, horizontal branch-pipes connecting said central upper air-chamber with the said pair of upper airdrums, a central funnel-shape upper air-v chamber, a pair of open-ended burner boxes arranged beneath the said central funnelshape upper air-chamber and adapted to contain fuel-burners, means for controlling said gas and oil burners, a centrally-disposed series of draft fines or air tubes leading from a throat or chamber located between the bilrner-bo-xes to said central upper air-chamber, an auxiliary series of vertical tubes or air passages in the two main upper airdrums, and an outer-casing having a crown or dome and mounted on legs above'the floor for the desiredfeed-supply of air from below to be heated and passed onward through the drums and pipes of the furnace into the dome orcrown for distribution thence into and through the conductor-pipes into the apartments above, substantially as herein shown and described.

JOHN WEIGEL. 

